Internal-combustion engine



April 3, 1928. 1,665,192

M. SPENCE' INTERNALpOMBUSTION ENGINE Filed Feb. 10, 1927 FIE-1.5 V

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Patented Apr. 3, 1928. v

UNITED STATES 1,665,192 PATENT OFFICE.

MORTON SPENGE, 0F SPRINGFIELD, ILLINOIS, ASSIGNOR 0F ONE-HALF TO EARLE '1. SPENCE, OI SPRINGFIELD, ILLINOIS.

INTERNAL-COMBUSTION ENGINE.

Application filed February 10, 1927. Serial No. 167,171.

The present invention is a modification and improvement of the inventlon disclosed in my application Ser. No. 135,383, engineblock and its cylinders, filed Sept 14, 1926.

The purpose of the invention is to pro vide improved and effective means whereby the cost of production is mater ally reduced and the assembling, mountmg and dismounting of the parts is greatly facilitated, without detriment to the security and safety of the structure as a whole.

A prime purpose is to provide a structurein w ich a single screw-ring is utilized to connect the cylinders with the engine-block.

The invention is illustrated in the accompanying drawing, to which reference is hereby made, and in which similar reference numerals and characters designate like parts wrench Wlll be used to rotate the screwin the several views.

I have shown and will describe the improvement as embodied in a single cylinder of an internal combustion engine; but it is obvious that the improvement may be applied to steam engines or gas engines without departure from my inventlon.

Figure 1 is a sectional view taken on the axis of a single cylinder body of amulticylinder of an internal combustion engine; Fig. 2 is a top view of the same structure that is shown in Fig. 1; Fig. 3 is an enlarged fragmental sectional view showing clearly details of the connection of the assembled parts with each other; Fig. 4 is an elevation of the detached cylinder; Fig. 5 is a perspective view of the detached screw-ring; and Fig. 6 is a' side view of a pin-wrench used to rotate the screw-ring.

The engine-block as a whole, is desi nated by the numeral 7. The cylinder b0 y is designated, as a whole, by the numeral 8,.

and the inner removable cylinder is designated as a whole, bylthe numeral 9. The cylinder body has an internal circular flange 10 having a circular shoulder 12. A circular flange 13 near the upper end of the cylinder body has a recess or depression 14. The inner circular wall of the member 13 has internal screw threads 15.

The inner cylinder 9 has near its upper end an integral flange 16 adapted to enter freely the depression 14 in the member 13. The inner removable cylinder also has an integral intermediate circular flange 17. I

The screw-ring 18 has external screw threads 18 adapted to engage the screw is adapted to slide in the inner or removable cylinder and is moved by a piston rod 25 of usual construction.

To assemble the parts the inner cylinder 9 will be placed in the cylinder body with the flanges 16 and 17 supported on the gaskets 22 and 23 previously inserted on the members 13 and 10 and the screw-ring will be placed in the recess 14- and the pinable cylinder which may be rotated by hand or any suitable means, to compensate for the wear, thus greatly prolonging the efl'ective life of the cylinder and avoiding the necessity for repeated re-grindings. This is an important feature of my invention.

I am aware of the prior use of removable inner cylinders in the cylinder-bodies of engine-blocks I therefore do not claim broadly that feature of construction.

What I claim as new and desire to secure by Letters Patent is:

1. In conjunction with a cylinder body having at its upper part a recessed internally screw-threaded member, said cylinder body having also an upper internal circular flange der members of the cylinder body; washers interposed between the respective innerflange-shoulder members of the cylinder body and the respective outer flan es of the removable cylinder; and an externally screwno i threaded ring engaging the screw threads in the recess of said upper flange member of the cylinder body and rotativeto make a tight connection of the removable cylinder with the cylinder body.

2. In conjunction with an engine block having a circular bore an internal upper circular flange member and an intermediate circular flange-and shoulder member; a cylinder having an upper external flange member seating on said upper internal flange member of said block and an intermediate neemee external flange member seating on said intermediate flan e and shoulder member of the block, to mahe a Water-tight connection of the cylinder with the block, and a screw ring screwing into the upper end of the block andksecuring the cylinder in the bore of the bloc In Witness whereof I have hereunto signed 20 my name at Springfield, 111., this 7th day of February, 1927 MoR'roN sPENcE 

